Home / 18,911.16-28,370.40-8,377.14

Finding the Fourth Proportional to 18,911.16, 28,370.40 and 8,377.14

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Solution

The fourth proportional to 18,911.16, 28,370.40 and 8,377.14 is: 12,567.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911.16 : 28,370.40 = 8,377.14 : x
  2. Step 2: Convert to fraction form
    18,911.16/28,370.40 = 8,377.14/x
  3. Step 3: Cross multiply
    18,911.16x = 28,370.40 × 8,377.14
  4. Step 4: Simplify right side
    18,911.16x = 237,662,812.66
  5. Step 5: Solve for x
    x = 237,662,812.66/18,911.16
  6. Step 6: Final answer
    x = 12,567.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.